JPS63318989A - Embroidering frame control apparatus of embroidering sewing machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a control device for driving and controlling an embroidery frame of an embroidery machine.

(Prior art) Conventionally, in the case of an embroidery machine that drives an embroidery frame and a needle bar according to input embroidery data and embroiders on cloth set in the embroidery frame, the embroidery frame is moved along the X axis,
When moving the embroidery frame in the Y-axis direction, the timing to start moving the embroidery frame is always set to the point when the needle bar has risen to the specified position, regardless of the amount of movement of the embroidery frame in the X-axis direction and the amount of movement in the Y-axis direction. Ta.

(Problem to be solved by the invention) In the case of the above conventional embroidery sewing machine, the embroidery hoop's
Regardless of the direction movement ηk and the amount of movement in the Y-axis direction, the embroidery frame always starts moving when the needle bar rises to the specified position, so if the amount of embroidery frame movement is small, the embroidery frame movement is completed. Even when the embroidery hoop is moved, the upper thread and hook may still be engaged, making the so-called "thread line" stronger than necessary. On the other hand, if the embroidery hoop is moved a large amount, the upper thread may Since the engagement between the embroidery frame and the hook is released, there is a problem in that the thread alignment becomes weaker than when the movement a of the embroidery frame is small.

Therefore, in the present invention, when the movement amount 1 of the embroidery frame is small, the amount of delay in the start timing of the embroidery frame movement is increased, and when the movement amount M of the embroidery frame is large, the movement of the embroidery frame is delayed. By reducing the delay in the start timing, the embroidery thread is properly and evenly aligned with the cloth placed in the embroidery hoop, and the texture of the embroidered cloth is improved. zu°
This is a technical issue that should be addressed.

(Means for solving the problem) The technical means for solving the above problem is to read the embroidery data input from the outside, and move the embroidery frame in the X-axis and Y-axis directions according to the read embroidery data. Driving power is output to the embroidery frame drive motor for driving the embroidery frame to move the embroidery frame, and at the same time, the upper thread of the needle bar is driven to the top of the embroidery frame, so that the upper and lower threads are applied to the fabric placed in the embroidery frame. An embroidery frame control device of an embroidery machine that performs embroidery based on embroidery data includes a needle bar position detection means that outputs a signal corresponding to the drive position of the needle bar; a movement start timing storage means that stores movement start timings of the embroidery frame corresponding to respective movement amounts when the embroidery frame is moved; movement start timing search means for reading out each of the movement start timing in the X-axis direction and the movement start timing in the Y-axis direction from the movement start timing storage means; and the movement start timing by inputting a signal output from the needle bar position detection means. and a drive control means for outputting drive power to the embroidery frame drive motor when the needle bar position matches each of the X-axis direction movement start timing and the Y-axis direction movement start timing read by the search means. It is to do so.

(Function) According to the embroidery frame control device of the embroidery sewing machine configured as described above, the needle bar is driven in the vertical direction and the embroidery frame is driven in the X-axis and Y-axis directions according to the embroidery data input from the outside. When embroidering on a cloth set in an embroidery frame, the movement start timing search means detects the movement start timing in the X-axis direction corresponding to the amount of movement in the X-axis direction and the amount of movement in the Y-axis direction of the embroidery frame for each stroke of the needle bar moving up and down. The movement start timing and the Y-axis direction movement start timing are read from the movement start timing storage means. The drive control means manually receives the signal from the side bar position n detection means, and when the needle bar position reaches the X-axis movement start timing and the Y-axis movement start timing, the drive control means controls the X-axis drive control means. Then, drive power is output to the embroidery frame drive motor for driving the Y-axis, and the movement of the embroidery frame is started. X-axis direction movement start timing and Y
The axial movement start timing is such that when the amount of movement of the embroidery frame in the X-axis direction and the amount of movement in the Y-axis direction is small, the start of the embroidery frame movement is delayed; conversely, when the amount of movement of the embroidery frame is large, the embroidery frame The embroidery hoop is set to start moving more quickly than when the amount of movement is small, and the effect is to even out the tightness of the thread against the embroidery fabric even if the amount of movement of the embroidery hoop changes. do.

(Example) Next, an example of the present invention will be described with reference to the drawings. 1st
The figure shows a control system of an embroidery sewing machine according to the present invention.The microcombicoater CPU contains a control program for controlling the embroidery sewing machine, and a control program for controlling the embroidery frame 3 in response to the movable base of the embroidery frame 3. A memory element ROM containing delay data for delaying the movement start timing of step 3 is connected to a memory element RAM for storing externally inputted embroidery design data or calculation data, and furthermore, various interfaces are connected. ,for example,
The operation panel interface 2 connected to the operation panel 1 of the embroidery sewing machine and the embroidery frame 3 are
An X-axis pulse motor 4 provided to avoid movement in each direction of the Y-axis, and a pulse hepteater interface 7 connected to a pulse motor driver 6 that outputs drive pulse currents to each of the Y-axis pulse heptares 5. , a tape reader interface 9 connected to a tape reader 8 for reading embroidery design data etc. recorded on the tape, and a sewing machine main shaft motor interface 11 connected to a main shaft motor driver 10A that supplies driving power to the sewing machine main shaft motor 10. and sewing machine main shaft motor 1. A main shaft (not shown) is rotated by the drive of O, and a low-return encoder 1 outputs a signal corresponding to the position of a side bar (not shown) that moves up and down according to the rotation of the main shaft.
Angle sensor interface 13 connected to 2 is connected to the microcomputer CPU.

Further, the operation panel 1 is provided with an operation switch 1Δ for starting the embroidery sewing machine and a stop switch IB/+ for preventing the operation from being stopped.

The tape that has input the design data for embroidering the desired embroidery on the fabric etc. contains the coordinate data for moving the embroidery frame 3 in the X and Y directions of the coordinate axes,
That is, holes are made corresponding to X data, Y data, or function data such as an end code for instructing the end of embroidery. Microcombiner CPU
is synchronized with the needle bar movement according to the embroidery tape data read by the tape reader 8, and the X-axis pulse motor,
The embroidery frame 3 is moved by driving the Y@ pulse motor.

Next, the operation of this embodiment will be explained with reference to the flowcharts 1 to 7 in FIG. 2.

The main flowchart of the embroidery sewing machine is as shown in 1 in FIG. 2. When the power switch of the embroidery sewing machine is turned on in step 101, the microcomputer CPU is set to initialization 1! Then, in the stop routine of step 102, when the operation switch 1A on the operation panel 1 is pressed after changing the color of the embroidery thread, positioning the embroidery start position, etc., the embroidery machine is started. . In the operation routine of step 103, the activated embroidery sewing machine is operated according to the embroidery data, and when the end code etc. are read, the process returns to the stop routine of step 102.

Next, step 20 of the flowchart shown in FIG.
1, the microcomputer CPU has a memory element R
After clearing the AM working area and performing a stop process that is not directly related to the present invention, it is determined in step 202 whether or not the operation switch 1A is turned on.
If it is determined that operation switch 1A is turned on,
Return to the sewing machine main shaft operation routine, which will be explained next.

In step 202 of the sewing machine main shaft stop routine, if it is determined that the operation switch 1A is turned on, the second
Step 301 of the sewing machine main shaft operation routine shown in Figure 3
, a drive signal is output from the sewing machine main shaft motor interface 11 to the main shaft motor driver 10A in response to the output signal of the microcombiner 1 CPU, and a driving electric horn is output from the main shaft motor driver 10A to the sewing machine main shaft motor 10, and the motor is driven. In step 302, the working area of the storage element RAM is brought into an initial state.

After step 302 is executed, the count signals of the rotary encoder 126t etc. are inputted as an interrupt when the main shaft of the sewing machine starts operating, and the origin signal of the rotary encoder 12 is inputted as an interrupt according to the encoder origin interlab drib routine described later. Embroidery is performed by driving the needle bar up and down and moving the embroidery frame 3.

In step 303, it is determined whether the stop completion flag of the sewing machine main shaft is set, and if it is determined that the stop completion flag is set, the process returns to step 201 of the sewing machine main shaft stop routine.

If it is determined that the stop completion flag is not set, the process moves to step 304 and the stop switch 1B is turned on.
The stop switch 1B is turned on.
If it is determined that the embroidery sewing machine has not been read, it is determined in step 305 whether or not a stop code as a table data function has been read. If it is determined that there is no stop code, the embroidery sewing machine continues to operate. On the other hand, if it is determined in step 304 that the stop switch 1B is ON, or if it is determined in step 3o5 that the stop code based on the table data is ON, the process advances to step 306 and a sewing machine spindle stop request is made. Set the flag and set the stop counter to 2. In the next step 307, after completing the deceleration before stopping the main shaft motor of the sewing machine, the process returns to the step before the operation of the embroidery machine and other operations are performed.

Next, the encoder interlab read routine will be explained with reference to chips 4 to 6 in FIG. 2.

As shown in the above sewing machine main shaft operation routine, the clock signal of the row encoder 12 is sent to the combi lator CPU on the microphone via the angle pin sign interface 13 to determine the position of the side rod. ] It will be complicated. In step 401, when one output signal from the rotary encoder 12 is input, the microcomputer CPU
The counter is incremented by 1. In the next step 402, it is determined whether the counter value indicates the timing to read data from the tape reader 8, and the determination result is Y.
In the case of ES, in step 403, function data including X-axis data, Y@ data, stop, end, etc. data of the embroidery hoop 3 is read. Meanwhile, step 40
If the determination result in step 2 is NO, it is determined in step 404 whether the count value matches the timing of outputting the drive signal for moving the embroidery hoop 3. , in step 405, the delay in starting the embroidery hoop movement fII stored in the ROM & the X-axis movement start delay number based on the count number of the CPtJ counter that counts the output signal of the rotary encoder 12, and the Y-axis movement. The X-axis movement start delay number and the Y-axis movement start delay number are read out from the frame delay table stored in C corresponding to the amount of movement of the embroidery hoop 3 in the X-axis direction and the Y-axis direction, respectively. Set the delay number.

In step 406, it is determined whether the X-axis movement start delay number is zero, and if the determination result is YES,
In step 407, a drive signal for driving the X-axis pulse motor 4 is output. On the other hand, step 406
If the determination result is No, the X-axis direction frame movement delay flag is turned ON in step 408. In step 409, it is determined whether the Y-axis movement start delay number is zero, and if the determination result is YES, in step 410, after outputting a drive signal for driving the Y-axis pulse motor 5, Return to the sewing machine spindle operation routine. On the other hand, if the determination result in step 409 is No, step 411 sets the Y-axis direction frame movement delay flag to O.
After setting it to N, skip back to the sewing machine main shaft operation routine. Further, if the determination result in step 404 is No, the process moves to step 412 of 5 in FIG.

In step 412, it is determined whether the X-axis direction frame movement delay flag is ON or not, and if the determination result is YES,
In step 413, 1 is subtracted from the X-axis movement start delay number. Furthermore, if the determination result in step 412 is No, the process moves to step 417, which will be described later. In step 414, it is determined whether the x1 movement start delay number is zero, and if the determination result is YES, in step 415, a drive signal to skip driving the X-axis pulse motor 4 is output, and the In step 416, the X@ direction frame movement delay flag is turned off. On the other hand, if the determination result in step 414 is No, the process moves to step 417.

In step 417, it is determined whether the Y-axis direction frame movement delay flag is ON or not, and if the determination result is YES,
At step /118, subtract 1 from the Y-axis movement start delay number. Furthermore, if the determination result in step 417 is No,
The process moves to step 422, which will be described later. In step 419, it is determined whether the Y@transition start delay number is zero, and if the determination result is YES, in step 420, a drive signal for driving the Y-axis pulse motor 5 is output, Furthermore, after setting the Y-axis direction frame movement delay flag to 0FFt in step 421, step 422
to move to.

In step 422 shown in 6 of FIG. 2, it is determined whether the count value of the encoder counter matches the main shaft stop timing, and if the judgment result is /)<YES, the main shaft of the sewing machine is stopped in step 423. Determine whether the request flag is ON. On the other hand, step 4
If the judgment result in step 22 is NO, return to the sewing machine main shaft operation routine after performing timing processing other than the sewing machine main shaft stop timing.If the judgment result in step 423 is YES, 1 is decremented from the value of the stop counter in step 424. Pull. On the other hand, if the determination result in step 423 is No, the routine returns to the sewing machine main shaft operation routine. In step 425, it is determined whether the stop counter is zero, and if the determination result is YES, in step 426, the output of the drive signal to the sewing machine main shaft motor 10 is stopped, and the sewing machine main shaft stop flag is set. , returns to the sewing machine spindle operation routine. Also,
If the determination result in step 425 is NO, the process returns to the sewing machine main shaft operation routine.

Next, the encoder origin signal interwoven subroutine when the low-resolution encoder 12 confirms the origin will be explained with reference to flow 1 shown at 7 in FIG. 2. this is,
When the rotary encoder 12 confirms the origin, the origin signal is sent via the angle sensor interface 13.
By sending the data to the encoder counter of the microcomputer CPU, the value of the encoder counter is set to zero, as shown in step 501.

(Effects of the Invention) As described above, according to the present invention, the timing to start moving the embroidery frame is determined in accordance with the movement Iit of the embroidery frame during the embroidery operation of the embroidery sewing machine, and the thread line of the embroidery is adjusted appropriately. In addition, since the embroidery frame is moved so that the thread line is almost even, it is possible to improve the quality of the embroidered cloth.

[Brief explanation of drawings]

FIG. 1 is a control system diagram of an embroidery sewing machine according to an embodiment of the present invention, and 1 to 7 in FIG. 2 are control flowcharts of an embodiment of the present invention. 1...Operation panel 2...Operation panel interface 3...Embroidery hoop 4...X-axis pulse motor 5...Y-axis pulse motor 6...Pulse motor driver 7...Pulse motor interface 8 ...Data reader 9...Tape reader interface 10...Sewing machine main shaft motor 10A...Spindle motor driver 11...Sewing machine main shaft motor interface 12...
・Rotary encoder 13...Angle sensor interface 1-S CPU...Microcomputer RAM, ROM...Storage element Applicant Tokai Kogyo Sewing Machine Co., Ltd. Agent Patent attorney Hidehiko Okada (and 2 others) Gisaku's A Inflow Keyato Fig. 2 Fig. 1 Fig. 2 Fig. 9

Claims (1)

[Claims] Reads embroidery data input from the outside, and outputs drive power to an embroidery frame drive motor for driving the embroidery frame in the X-axis and Y-axis directions in accordance with the read embroidery data. An embroidery frame control device for an embroidery sewing machine that moves an embroidery frame and drives a needle bar up and down to embroider cloth hit by an embroidery frame with upper and lower threads based on the embroidery data. , a needle bar position detection means for outputting a signal corresponding to the drive position of the needle bar, and a means for starting the movement of the embroidery frame corresponding to the respective movement amounts when moving the embroidery frame in the X-axis direction and the Y-axis direction. A movement start timing storage means that stores the timing, and a movement start timing of the embroidery frame in the X-axis direction and a movement start timing in the Y-axis direction corresponding to the amount of movement in the X-axis direction and the movement amount in the Y-axis direction of the embroidery frame, respectively, are moved as described above. A movement start timing retrieval means read from a start timing storage means, and a movement start timing in the X-axis direction and a movement in the Y-axis read by the movement start timing retrieval means by inputting the signal output from the needle bar position detection means. An embroidery frame control device for an embroidery machine, comprising: drive control means for outputting drive power to the embroidery frame drive motor when each of the start timings and the needle bar position match.